{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8521959","patent":{"patent_number":"US-8521959","title":"Method and device for recovering description information, and method and device for caching data in database","assignee":null,"inventors":[],"filing_date":"2012-09-18T00:00:00.000Z","publication_date":"2013-08-27T00:00:00.000Z","cpc_codes":["G06F","G06F"],"num_claims":8,"abstract":"A method for recovering description information, or a method for caching data in a database, includes: judging whether a database is closed normally after the last operation; if the database is not closed normally, traversing each data block in a level-2 cache, where corresponding disk location information is saved in a header of each data block; obtaining a data block in a disk according to the disk location information; and when the obtained data block in the disk is the same as a corresponding data block in the level-2 cache, establishing description information according to location information of the data block in the disk and location information of the data block in the level-2 cache, where the description information is used to describe correspondence between the location information of data in the disk and the location information of data in the level-2 cache."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and device for recovering description information, and method and device for caching data in database","description":"A method for recovering description information, or a method for caching data in a database, includes: judging whether a database is closed normally after the last operation; if the database is not cl","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8521959","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-8521959","citation_suggestion":"Patentable. \"Method and device for recovering description information, and method and device for caching data in database\" (US-8521959). https://patentable.app/patents/US-8521959","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8521959","json":"https://patentable.app/api/llm-context/US-8521959","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T15:08:17.591Z"}